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Patent US2232802A successfully refreshed from Google Patents.
US2232802A
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Piston for power engines
Assignee: Sulzer AG
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Filing: 1938-07-07
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Granted: 1941-02-25
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Expires: 1958-07-07
Abstract
No abstract record available.
Inventors
- 👤 Retschy Curt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:21
CPC Classifications
F; F16; F16J; F16J1/00; F16J1/10; F16J1/24; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32606; Y10T403/32631; Y10T403/32681; Y10T74/00; Y10T74/15; Y10T74/1558; Y10T74/1587; Y10T74/1589; Y10T74/159
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-02-25 | 1944-08-26 | 1945-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-02-25 | 1948-08-26 | 1949-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-02-25 | 1952-08-26 | 1953-02-25 | $7700.00 | Window Closed / Lapsed |